Tension mechanism



May 31. 1927. 1,630,376

J. DERRY TENSION MEQHANISM Filed Oct. 20, 1924 i 1 Patented 31, I I lJASPER'DERRSLZI, osMEDroRD; jMA'ssAoi-iUsE'rTs, zissiefioii Tohnnmmfihexmsmfi or LBOSTON L'IMASSAQIPITISET'IVS.

"TENSION M CHANISM} L f.-

" I .Thisfihventioh relatesto ihieeliahisih for zipplying tension ,to 'af strip f or vvjeh of flex:

'ible material drawn 7 from, a roll or lfeel," hasfor its object ,toprovidesimpl fied-but e e i i meehani i i .f t-e 'plyin '5 95 31 tially;at or ed agent the; center of the i 01], zrbreking fOITCQIGSlSlZHlg thehee.rotet on'of thefl'latter findf mitoihzitically proportioned Y toithecliei neterfl of the ;roll so that the strip,

' roll, hrill he] siibjeetecl to. a eonstant 'teii'sion} ,To this endthe in ve ti'oh eomprises a simple 7 form ofecompoiinclilever systeminelucling lever member's engaging resp eeti iely the 'co'rer and theperiphery o f 'the roll'ziiicl a'resilieiit connection between saidlever members for applying ;to the flj'rrn'erfa pressure controlledjention itloglethe'r means I hQI'PbY 19 a lat er may be harried inteffect Wm; est

be understood from the-following description ofonefor'm or emboclim'entthereof illustrated in the; eoeo'mpanying drawings, Itfwillchosenfor illiistra'tive piirposes merely, and" that said invention, as.clefined by; the claims hereunto appendeclymay beotherwise'z'eihbocliecl .ivithout' clep arture from the spirit anclscope thereof: Y I

In said drawings; 3 Fig. 1 :is a partialfsideelevatio iof tire wrappingmachine having-the invention a1} plied thereto.

' I and tension mechanism shownin Fig. 1; I

Fig.3 is u seetionftaken substantially on the line 33, Fig, 2; q t

Fig. 4 is a t fragmentary elevation of the roll-carrying sleeve-or core.7

5 is a seotionjtaken substantially on theline'55,

While the invention otherwise employed, it isshown i1i Fig. 1 as appliedto a machine for spirally Wrapping automobile .i'iies with st'helic'llyw und strip of pa'per'.

7' As shown, the frame of the Wrapping ins chine 'con pi'ises a bracket20Izt claptedjto he secured in projecting, position to the edge off a;bench orjtable (not shoi'vn) -Va 1d includ iiig' a yoke portion 21havingan openftop smilecirculztrseries ofrollers 22, 23, 24; 25 1 anti26 for rofatibly supporting ah aiifii lmfl, A shuttle 2?;f0rn1ied; withan opening 28a'dapt- I 5; v

ep i ef b filed me e- 3 20, 1924. I Seifia1LNo.;:744 ,8:6O.' y 5 Theforegoingiuicl other objeots of the hav ng we i 'i'i d d to iadaptedtogbeiraisedlan d l've be imclersto'od, however, that theparticular h I h h V the ex le therefrom y' i ean of suppliedfronivef'roll 38f rotatahlysupported 1 t h V "apply tension ito thestriplby mechanismto Fig. 2 is anenlz rgeel elevation 0f the reel.

I jot a, screw: 42", tap1ied" int 9 d pi d -1 leeve .11 an integralflange r0 'fixi registe r irith of the vice in order to permit,insertion m e t me? I. gQllllGliWQI'lLWt; LSaidtireJ is; supported Iwith its uppermost portion centred withv reg speot to the shuttle 27] bymeans of a. pair of shown at 29, saidrollerstbeirig earrieid' by shafts3Q, ournallecl 1n S1l1ttbl6.jb6&1'l11gS; in'

ing 31 ith-ashaft 828,130 jou -niiuedjmsuie able bearing sin the framean carryingthe shuttle supporting: roller 25. The Shuttle i 27 and Worksi pporti-ngrollers 219 are; therefore, conn'e'otecl for. simultar eous'rotation in gag J end rotatecl legy- :1,;v friction "h W li u'piqp I t ada m .t ion 3 lioh helsh eftofiah 1e use the pinioh '34;Witliftherlisk{aridc $61M operated lkzeriisz. )f Ihe rapping; i atei a p ferahly n;the 7 form of T2 .jcol ltiii uous I'strip S' ofgpapier, is

or the shuttlegf'r', Fr oih the 1011 38 the S passe's :toj'the Ttirel/Vover affolcling deyice 39 which folds-under orie edge of the strip.The rotation of the'roll'f38 is resisted; to

hi ch the present invention relates; slid the preferred;Construction or:Which Will now be I of? h 1 11.38 wh .5 Works, supporting rollers one,o which": is e the roll of Wrapping1haterial. Also'by V virtue of thisoonstrution, the roll 38 is 'sup- I and ar'n1153 oonsti ported atone'lateralside :of the shuttle 27 and normally projects"outwardlybeyondthe shuttle QSWGll as inwardly thereof, as shown. in dottedlinesinFig. 2, Whereby'a roll of relatively large size maybe utilizedWithout,

v interfering With'the rotation of the shuttle .27 around;thetireto-"bewrapped;- r

Pivotecl intermediate its ends at 47 to the,

face of the sl1u'ttle -27is abrake I'eV'ere'B one end" of IvvhiolLisshaped to engage the sleeve l between 'the'flahge 43:21:11 dthe face'ot'fthe' shuttle '27 j.-

disposed pai-"a'llelitoi the spindle f 4 0. sleeve ol is prov ded l altttllitliy ing arm 53, which eng 1 the 1 01188. a

It, 111 e seen that ere-eta 50, sleeve V trite, in -effet, e ;1-ever ofthe second class pl-v'oted' at one end", enga ing "the 1 01188- "at theother, and connected intermediate its endsby the spring; 49 with onearmofthe lever"4;v8. The spring "49 V is" so tensioned bythe controlling 1e'verQ5Q', 51, ts; when. the r 11 38; is f. maximum '7 size, as-to"apply throngh the a lever. {L8, tothe 1 1 tsleeve'eismhfa brakingforoeresistin the *qr tat on-pi the roll 38 as will cause thev "strip S to bedrawn from the latter {under the de'sired tension. y'As the'diarneterofthe roll 38 deereas'es', the arm'53'0f theeontrol- .linglever movesinwardly toward the aXis of the I'OIL therebY'gradnally relieving thetens'ionjon the spring 49; andeonsequently, I diminishing the brakingforce; ias is ec ssary in "order to ma'ifitain constant the 'tension onthe strip" Sfas thelatter is (drawn from the periphery fofitlie'diniir'lishing roll.

Havingrth us des'eribed' niy invention, I.

elaimJ" "1. In a tire vvr'appiiig machine having means a for's'n'pport'ing an article to be Wrapped, the combination of a rotary'shitftle rotatable around the articlefa rotary member connected" tosaidshnttle at oneend 'ofilyfor supporting a roll of Wrapp'ingTnia-Jterial entirely at one side of jthe sl'inttle, a I pair of substantiallyparallel levers carried by said rotary 'shli ttle o' ne comprisinga b an gifigl e d mem r t en e roll and'theshnttleand theotherl'engaging theperiphery. of the; roll, and asprin con- V neetingth'eflevers'togethenj'- V 2. In' tire wr p ing 'machin'efhaving nieans ffor supporting-[fan article ;to--be Wrapped, the combination of a rotaryshuttle rotatable. areund the article. a rotary member connected to saidshuttle at" one end only for supporting a relief Wrapping ,lnaterialentirely at one'side of the shuttle,

V, p :1 ,e30,37e

a air ofsubstahtially parahel levers carried i by saidrotary shuttle;one-comprising a one piece brake member engaging thefperiphery Vof-saidinember. between therollandlthe.

shuttle and the other comprising a fiat member having a Wipingengagementjwith the periphery: of the roll, 1 and'a spring connectingthe levers together; V

.the periphs'tiid' projecting laterally fromfsaid f rhove '7 able:h'ubfa "'one piece bratl'ze lever pivoted intermediate its endsflpQn/the js'hlittle ne endfperiipheral lyw engagin said r0projecting-stud;

41111 a W rappiirg ih'adhine having ineahs for su p'p'ortiirg -"anartiele to flee wrap ed, the combination'offa shlittle,ro f tatablearound the articlegmomry member";-

er the roll; a hub ivhich said' arrn is and one fiend peripherallyengagin -Said Wrapped, the eoinhination of 1 a shiittle. ro-

. tatab'le around the article; "a rotary member upon which the roll ismounted carried by said shuttle, a ,oontr Ilingflever pivoted at; oneendtothe'shtittle and a't *the otherjend engagingthe periplieiy of thero'll'ja brake lever aivoted intermediate itseiids'to the shii'ttle andat. one end engagi gsaid rotary member, "ahdf'a springconnecting theother endof s'ai'djbr'ake levertvithsaidicontrolling lever internecliate' the endsoff the latter. 7 a I 6. In a t re wrap ing machinehaving means for "su orting jan'fartiole to be wrapped, the, ooinbinatiotle rotatable'aro1incl" "th i'heih'ber connected to saidis'hnttle atoneend :me b r, and a spring oonfieot'ing the otl'ier end-90f said leverWith said laterally ir i f a stu pi i e'f m ei "1 1 b; r v

abrake lever pivoted intermediate ts ends f a rotary/shut article, i arotary (sniffer supporting a "roll of wrappingzina-r ter al entirely atone sl-deiof the shuttle,

. pair of leversloarriedibysaid rotaryshuttle, one compris ng af-bralie'engaging Said menu ber between the rollf'and the" shuttle and the 113157othenehgaging' thelperiphery of 'the roll;

and spring connecting the v levers together;

i testimony ivhereof'f'affix my signature.

p meER E sY.

